flattening agent

• 消光剂

flattening agent的用法和样例：

例句

1. The precipitated silica matting agent was synthesized by chem-deposit method,sodium silicate and sulfurric acid as raw materials,appending dispersant and surfactant.
   涂料中的消光剂是一类能够改变涂膜表面光学性能的助剂。